What is the worst-case time complexity of searching for an element in a queue implemented using a linked list?
O(1)
O(log n)
O(n)
O(n log n)
What is the purpose of the 'front' pointer in an array implementation of a queue?
It tracks the total number of elements in the queue.
It points to the element that has been in the queue the longest.
It points to the most recently added element.
It points to the next available empty location.
In a queue data structure, what does the 'enqueue' operation perform?
Adds an element to the front of the queue.
Adds an element to the rear of the queue.
Checks if the queue is empty.
Removes and returns the element at the front of the queue.
What is a potential drawback of implementing a queue using an array with a fixed size?
Requirement of complex algorithms for insertion and deletion.
Risk of queue overflow if the queue reaches its maximum capacity.
Inability to store elements of different data types.
Increased time complexity for enqueue and dequeue operations.
Consider an array-based queue with 'front' at index 3 and 'rear' at index 7. After two dequeue operations, what will be the new value of 'front'?
1
5
2
6
What is the primary characteristic that distinguishes a queue from other linear data structures?
Elements are added at one end and removed from the other.
Elements are added and removed from the same end.
It is a sorted data structure.
It allows for random access of elements.
What data structure is used to implement a priority queue?
Array
Stack
Linked List
Heap
In a circular queue implemented using an array of size 5, the front is at index 3, and the rear is at index 1. What happens after two dequeue operations?
The front moves to index 0, and the rear moves to index 4.
The front moves to index 0, and the rear remains at index 1.
The front moves to index 1, and the rear moves to index 4.
The queue becomes empty.
If a queue is implemented using a fixed-size array, what condition leads to a 'queue overflow' situation?
Trying to sort the elements in the queue.
Trying to access an element beyond the queue's capacity.
Trying to add an element to a full queue.
Trying to remove an element from an empty queue.
Which real-world scenario best exemplifies the use of a queue data structure?
Tracking the order of tasks assigned to a CPU
Finding the shortest route between two points
Storing a family tree with ancestors and descendants
Managing a list of students sorted alphabetically